When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade etc. Use Button 1 or Button 2 to toggle between VGA or HDMI source and then press Button 3 to confirm your selection ( Figure 3).

If the monitor is working correctly, it detects that there is no signal and one of the following message ( Figure 2)appears. Note: You can run the built-in diagnostics only when the video cable is unplugged and the monitor is in self-test mode. To ensure proper Self-Test operation, removethevideo cables (VGA, DVI, HDMI or DisplayPort) from the back of the computer.Note: This box also appears during normal system operation, if the video cable is disconnected or damaged. The LED lights on the monitor are always black/switched off and there is no image displayed on the screen. Change the input color format to PC RGB or YPbPr in the Color Settings On-Screen Display Menu (OSD).

Make sure that the video cable connecting the monitor to the computer is connected properly and is secure. No POST - Your computer is not showing any indication of activity, the screen might be blank and will not display the Dell logo during start-up.No Video - You are unable to see any display on the screen, able to hear the windows chime but no display is seen. Turn off your monitor and reconnect the video cable: then turn on both your computer and the monitor. How to Use and Troubleshoot the Dell SE2417HG Monitor Learn how to setup and use Dell SE2417HG monitor.